Thanks.
Yesterday i decided to skip the Zidoo H6 rom and have tested the Beelink GS1 H6 rom.
This rom is faster, feels stable and plays 4K60FPS with no problem in KODI. Only problem is that with this rom i cannot get audio passthrough from KODI yet worked.
https://beelink-my.sharepoint.com/personal/firmwareservice_beelink_onmicrosoft_com/_layouts/15/guestaccess.aspx?docid=11ef45a02b5764645b8cf5a85a710d342&authkey=AZk7PNMk2cjZUScOW0HwCPA&e=5845e909825b4439828325ae73fdbad6